The internal mesh cup panel secures the cup and increases ventilation to improve cooling

this Liberty Advanced 12

thermo conductive inner coating to absorb & retain your own body heat Windproof construction shields you from the elements Bonded 3 layer softshell material with a warm brushed inner layer Ribbed cuffs & waist to shut out the cold

As The Bottles Are Made Out Of Non-Toxic Plastics & 18/8 Food-Grade Stainless Steel

see the detailed pics

New Marucci ECHO CONNECT Composite Fastpitch Bat, 2 1/4" Barrel Black/Red 28/17:Black/Red The internal mesh cup panelNewly engineered, MDX composite construction barrel is built with a multi directional composite design to create an ultra responsive barrel with explosive sound. SDX EXT, Extended Shock Dissipating Connection (US Patent No. 10,016,667), increases stiffness to maintain energy transfer to the ball, while also dismissing all harsh, unwanted vibrations from players hands Ring free barrel construction allows for more barrel flex and increases performance